Pie-crust-trimming machine.



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PATENTED DEC. 24, 1907.

0. GOLBORNE. n PIE 'GRUST TRIMMING MACHINE.

APPLIOATIOR' FILED JUNE 24.1907.

IIIIIUIN nur nomas rzrxns ca. asuma-rou. n. c.

UNITED sTATEs PATENT DQ oJaEmE.

OLIVER COLBORNE, OF CHICAGO, ILLINOIS.

PIE-CRUST-TRIMIHNG MACHINE.

Specification of Letters Patent.

Application led J' une 24, 1907- Serial No. 380,534. 'i

To all whom it may concern.'

Be it known that l, OLIVER CoLBoRNE, a citizen of the United States of America, and a resident.of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Pie-Crust-Trimming Machines, of which the following is a specification.

The main objects of this invention are to provide an improved form of pie crust trimming machine, in which the trimming mechanism may be readily adjusted for handling different sizes of pies; to provide a machine ofthis class in which the crust trimming devices are normally at rest, being driven only at times when actually performing the trimming operation; and to provide a device of this class in which the adjustment for difierent sizes of pies maybe readil n made with-aV minimum replacement of par i. These objects are accomplished by the device shown in the accompanying drawings', in which Figure 1 is a front elevation of a pie crust trimming machine constructed according to this invention. Fig. 2 is a side elevation of the same. Fig. 3 is a section on the line 3-3 of one of the trimmin roller arms, Fig. 2. Fig.. 4 is a section on t e line '4-4 of F1g.-2 showing the arrangement of the crust trimming rollers.

In the construction shown, the member 4 is carried at the upper end of a vertical shaft 5 and forms a horizontally disposed support for a pie tin. Said shaft is both rotatable and longitudinally slidable in its bearing 6. A sleeve 7 is journaled concentrically of the shaft 5 in the same bearing, being supported by a-collar 3 and carrying a bevel gear 9 at its lower end. The bevel gear 9 meshes with a second gear 10 carried by the horizontal driving shaft 11, also; journaled in the supporting frame 12.

The supporting frame has a part-overhanging the support 4 and having splined therein a shaft 13. rotation but is vertically slidable in its support and is normally urged to its lowest position by means ofthe spring 14, the downward movement being limited by a collar.15. The shaft 13 carries a trimming member or head 16 at its lower end, said head being provided with a plurality of radially disposed adjustable arms 17 which carry fixed bearings 1S. Each of the bearings has journaled therein-a spindle carrying at its lower end an idle crust trimming roller 19. These rollers are 4pref- The shaft `13 is secured against erably conical so that the parts of their peripheries which are adjacentl to the pie tin support will be inclined inwardly and upwardly with respect to each other, as shown in Figs. 1 and 2. Y

The arms 17 are preferably formed'of two sections which intert so as to slide longitudinally one -upon the other. These parts are provided with registering slots and adapted to vbe clamped in any position of adjustment by means of the bolts 20. The pie tin is indicated in position at 2l in Fig. 2. The rollers 19 are s aced equally distant from the axis of the s aft 5 sothat, when said shaft is upon each of the crust trimming rollers.

The vertical shifting of the shaft 5 is accfomplished by means of the lever 22 which bear; againstthe lower end of the shaft 5. The lever 22 isv normally depressed by a spring 23; and the weight'of the shaft 5 and the support is sufficient to cause said support to move downward out of engagement' with the trimming rollers 19 when the lever 22 is depressed. The lifting'rof the shaft L5 is accomplished by means of a cam-24 co-acting with the roller 25 at the o osite end of the lever 22. This cam shoul Ibe of such shape as to alternately hold .the support in its u per and lower positions. The gears 9 an 10 should be so proportioned as to insure that the entire rim of the tin is traversed by said rollers While the support is raised. The inshould be long enough to permit one tin to be removed and a second one to be brought in position below the trimming rollers.

The intermittent rotation of the support 4 is accomplished by means of the continuously rotating bevel gearsv 9 and 1() and the clutch membersA 26 and 27 The clutch member 26 is rigid on the bevel gear 9 and the clutch member 27 is rigid on the shaft 5. The clutch member 27 is suitably located so that when the shaft 5 is at the u per limit of xits movement said clutch mem ers will engage each other and rotate the support. I In order to prevent rotation of the shaft 5 through friction with the sleeve 7 when said shaft is in its lower position, the lower face of the clutch member 27 is provided with a y the stop 28 on the supporting frame.

The operation of the device shown is as follows: The shaft 11 is continuously driven by the pulley 29 and the cam 24 causes the lever terval during which the support is depressed plurality of stop notches which are engaged lifted, the rim of the tin will bear equally- 22 to oscillate so as to alternately raise and lower the sup ort 4. A pie tin with its contents is placed) upon the support 4 and when said support is next raised, the rim of the tin is carrled into contact with the trimming rollers 19. The lifting of the shaft 5 carries the clutch member 27 out of engagement with the stop 28 and shifts it int-o engagement with its mate 26. This causes the support to rotate. The movement of the shaft 5 is suliicient to raise the trimming member 16 slightly and insure a uniform pressure between the rollers 19 and the rim of the tin.

What I claim as my invention and desire to secure by Letters Patent is 1. In a crust trimming machine, the combination of a pair of members mounted in axial alinement and movable axially toward and away from each other, one of said members being adapted to support a pie tin and the other being adapted to engage the edge of' such tin for trimming a pie crust thereon, means for rotating one of said members relatively to the other and controlling means adapted to automatically start and stop such relative rotation when said members are moved toward or away from each other.

2. In a pie machine, the combination of a air of members movable toward and away iiem each other, one of said members being adapted to support a pie tin, a trimming roller on the other of said members adapted to engage the edge of such tin for trimming a pie crust thereon, mechanism adapted to rotate one of said members relatively to the other, and means controlled by the relative movement of said members toward and away from each other for starting and stopping the operation of said mechanism.

3. In a pie machine, the combination of a air of members movable toward and away lrom each other, one of said members being adapted to support a pie tin, a plurality of trimming rollers on the other of said members, arranged symmetrically about the axis of such tin and adapted to engage the edge of such tin for trimming a pie crust thereon, mechanism adapted to rotate one of said members relatively to the other, and means controlled by the relative movement of said members toward and away from each other for starting and stopping the operation of said mechanism.

4. In a crust trimming machine, the combination of a pair of members movable toward and away from each other, one of said members being adapted to support a pie tin and the other being adapted to engage the edge of such tin for trimming the crust thereon through the relative rotation of said members, mechanism for rotating one of said members relatively tothe other whe they are brought together, and means for preventing such relative rotation when said members are separated.

5. The combination of a 4support for a-pie tin, trimming mechanism adapted to engage the edge of a tin on said support, said support and trimming meehanlsm being relatively movable toward and away from each other, Vmeans for rotating said support' relatively to the trimming mechanism, and a clutch controlling the o eration of said means and adapted to be automatically closed and opened during the relative movement of said support and trimming mechanism respectively toward' and away from each other. v

6. A crust trimming machine comprising a horizontally disposed support for a-pie tin, a member mounted above said support, a plurality of crust trimming rollers ]ournaled on said member, being equally spaced with respleet' to the axis of said support and having t e adjacent parts of thelr peripheriesinclined toward said axis, mechanism for lifting said support to carry the tin into contact with said trimming rollers and simultaneously rotating said tin.

7. In a pie crust trimming machine, the combination of a support for a pie tin mounted to rotate on a vertical axis, a plurality of trimming rollers journaled on fixed axes above said support and equally spaced with respect to the axis of said support and mechanism for raising said support to carry the tin into contact with said rollers and adapted to simultaneously rotate said tin.

8. In a pie crust trimming machine, the

combination of a support for a pie tin,'a plurality of conical trimming rollers journaled above said support on axesV spaced equally with respect to the axis of saidv support, mechanism for lifting said support to carry the tin into engagement with said rollers and adapted to simultaneously rotate the tin, said rollers being idle and free to rotate independently of each other.

9. The combination of a support for a pie tin, a plurality of idle rollers journaled on fixed axes above said support and e ually spaced with respect to the axis of said1 support, said rollers having the adjacent parts of their peripheries inclined to the axis of said su iport, means for shifting said support vertically to carry the tin into contact with said trimming rollers, and mechanism for rotating said support when in its lifted position, said support being adapted to remain normally stationary when in its normal position below and out of engagement with said rollers.

10. In a pie crust trimming machine, the combination of a horizontally disposed support for a pie tin, a frame overhanging said support, a plurality of idle trimming rollers. mounted on said frame and equally spaced with respect tothe axis of said support, said support being movable vertically to carry y the tin into and out of engagement with said rollers, and the axes of said rollers being adjustable toward and away from the axis of said su ort to suit dierent sizes of tins.

11. 'llEe combination of a vertically disposed shaft, a support for a pie 'tin mounted thereon, a frame overhanging said support, a plurality of idle trimming rollers mounted to rotate on iixed axes in said frame and arranged symmetrically around said shaft, said shaft being longitudinally movable to carry the tin into engagement with said trimming rollers, a member journaled concentrically of said shaft and adapted to be continuously driven, and a pair of clutch members secured respectively to said member and shaft and adapted to engage with each other for rotating said shaft when the pie tin is in engagement with said trimming rollers.

12. In a pie crust trimming machine, the combination of a vertically disposed shaft, a support for a pie tin mounted thereon, said shaft being mounted to rotate on its own axis and to slide vertically in its bearing, a frame overhanging said support, a plurality of trimming rollers mounted to rotate on fixed axes on said frame and arranged symmetrically around said shaft, a clutch member j ournaled concentrically of said shaft and adapted to be continuously driven, means for shifting said shaft vertically to carry the tin into engagement with said trimming rollers, and a second clutch member on said shaft located so as to mesh-with said first clutch member and cause the rotation of said su port when said support is shifted vertically into engagement with said trimming rollers.

13. In a pie crust trimming machine, the combination of a vertically disposed shaft, a support for a pie tin mounted thereon, said shaft being mounted to rotate on Aits own axis and to slide vertically in its bearin a frame overhanging said support, a plura ity of trimming rollers mounted to rotate on i'ixed axes on said frame and arranged symmetrically around said shaft, a clutch member journaled concentrically of said shaft and adapted to be continuously driven, means for shifting said shaft vertically to carry the tin into engagement with said trimming rollers, a second clutch member on said shaft located so as to mesh with said first clutch urged downward, a stop limiting the downward movement of said member, a plurality of crust trimming rollers journaled on said member on axes equally spaced with respect to the axis of said su port, the parts of the peripheries of said rol ers which are adjacent to said shaft being inclined so as to converge upwardly toward each other, and mechanism adapted to lift said Lsu port to carry the tin into contact with sai trimming rollers and cause the tin to rotate while in such contact.

15. In a pie crust trimming device, the combination of a suport for a pie tin, trimming mechanism a apted to engage the rim of a tin on said sup ort for trimming 0H' the surplus dough, said) support and trimming mechanism being relatively movable toward and away from each other axially of the tin, and mechanism for imparting relative rotation to said support and trimmin mechanism to cause said trimming mechanism to travel about the rim of the tin, said mechanism being intermittently operated and being controlled in its operation through such relative axial movement of the support and trimming mechanism. 1

16. The combination of a support for a ie tin, a plurality of trimming ro lers ourna ed above said support on axes disposed transverse to the lane of the pie tin and arranged symmetrically with respect to the axis of the tin, and said trimming rollers being adjustable toward and away from the axis of the tin to suit different sizes of tins.

Signed at Chicago this 20th day of June 1907.

OLIVER COLBORNE.

Witnesses:

E. A. RUMMLER, GERTRUDE L. YoRKE. 

